Before resigning last month as the Memphis officer heard on a police radio allegedly having sexual relations with a woman, Dion D. Anthony claimed that the encounter was a charade. He claimed he faked sexually explicit comments and sounds with a woman and broadcast them to expose racism and unfairness in the Memphis Police Department. Anthony, 37, raised the issues in an interview during an internal investigation at the department of the 58 seconds of sex talk broadcast over an open microphone on the police radio about 8:40 p.m. on March 12. "I was not having sex on duty," Anthony...